Here's the scenario:
I'm at an event where people want to buy my app, but they can't do it on their device at that time (e.g. no internet/they don't have their device/it's too much of a faff). In this situation, I'd want to sell them a code for the app which they can redeem later. The code would be sold for the same price as the app in the App Store.
Is there a way for me to do this that doesn't break any Ts & Cs?
Thanks in advance for any help.